User Impersonation Affecting spid.aspnetcore.authentication package, versions [,3.4.0)
Threat Intelligence
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Test your applications- Snyk IDSNYK-DOTNET-SPIDASPNETCOREAUTHENTICATION-8737904
- published19 Feb 2025
- disclosed18 Feb 2025
- creditAbdel Adim (smaury) Oisfi,Paolo (paupu) Cavaglià,Nicola (fromveeko) Davico
Introduced: 18 Feb 2025
NewCVE-2025-24894 (opens in a new tab)How to fix?
Upgrade SPID.AspNetCore.Authentication to version 3.4.0 or higher.
Overview
SPID.AspNetCore.Authentication is a custom implementation of an AspNetCore RemoteAuthenticationHandler for SPID (a.k.a. the Italian 'Sistema Pubblico di Identità Digitale').
Affected versions of this package are vulnerable to User Impersonation due to the insufficient validation of SAML response signatures in the VerifySignature() function in XmlHelpers.cs. An attacker can impersonate any user by injecting a valid signature into a SAML response where the root object is expected.